<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>xpath</title>
</head>
<body>
    <div class="div_1">

        <ol>
            <li>java</li>
            <li>c++</li>
            <li>python</li>
            <li>JavaScript</li>
        </ol>
        <div class="div_2">
            <h13>这是一个标题</h13>
        </div>
    </div>

</body>
</html>